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A kind of preparation method of fluorine-doped helical carbon nanotubes

A carbon nanotube, fluorine doping technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc.

Active Publication Date: 2016-09-28
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, helical carbon nanotube materials that have photoluminescence properties in the deeper ultraviolet region (luminescence wavelength less than 300 nm), and further have deep ultraviolet emission characteristics less than 300 nm have not been reported yet.

Method used

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  • A kind of preparation method of fluorine-doped helical carbon nanotubes
  • A kind of preparation method of fluorine-doped helical carbon nanotubes
  • A kind of preparation method of fluorine-doped helical carbon nanotubes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Add 0.01mol nickel nitrate hexahydrate and 0.03mol citric acid monohydrate into a Erlenmeyer flask filled with 100ml of absolute ethanol, heat it in a water bath to 60°C and stir, keep it for 8 hours, then transfer it to a beaker, and put it in a beaker at 85°C After basic drying, it was completely dried at 175° C., and finally put into a muffle furnace for calcination at 375° C. for 4 hours to obtain nickel oxide nanoparticles.

[0020] (2) Weigh 0.025 grams of nickel oxide nanoparticles prepared in step (1) and put them into a tube furnace with a pipe diameter of 50 mm in a porcelain boat, heat to 365 ° C and keep for 1 hour, then turn off the hydrogen and pass through acetylene (flow rate of 40ml / min) to heat to 550 ° C and keep it for 1 hour, finally turn off the acetylene and pass through argon, and drop to room temperature under the protection of argon to prepare spiral carbon nanotubes.

[0021] (3) The helical carbon nanotubes prepared in step (2) are weighe...

Embodiment 2

[0023] Change the mixing mass ratio of helical carbon nanotubes and xenon difluoride in step (3) of Example 1 to 1:7, and other conditions are completely the same as in Example 1 to obtain fluorine-doped helical carbon nanotubes F-HCNT -2.

Embodiment 3

[0025] Change the mixing mass ratio of helical carbon nanotubes and xenon difluoride in step (3) of Example 1 to 1:5, and other conditions are completely the same as in Example 1 to obtain fluorine-doped helical carbon nanotubes F-HCNT -3.

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Abstract

The invention discloses a preparation method of fluorine-doped spiral carbon nanotubes. Nickel oxide nanoparticles are first prepared by sol-gel method, then reduced to nickel nanoparticles with hydrogen gas and used as a catalyst to crack acetylene at high temperature, and the product is reacted with xenon difluoride to obtain fluorinated spiral carbon nanotubes. The raw materials of the sol-gel method are nickel nitrate hexahydrate and citric acid monohydrate, and the solvent is absolute ethanol. The photoluminescence of the fluorine-doped helical carbon nanotubes of the present invention is increased to the 263nm and 291nm deep ultraviolet regions, which greatly fills the shortage of existing semiconductor materials in this region, and can be used as the basic material for ultraviolet luminescence and ultraviolet detection devices. It is applied in the fields of lithography technology, optical information storage and drug analysis.

Description

technical field [0001] The invention belongs to the technical field of carbon nanotube preparation, and particularly relates to a method for preparing a fluorine-doped helical carbon nanotube with deep ultraviolet photoluminescence characteristics. The application of storage and drug analysis can also be used as the basic material of ultraviolet luminescence and ultraviolet detection devices. Background technique [0002] Since the discovery of helical carbon nanotubes (HCNTs) in 1994, researchers have attracted great attention for their excellent physical and chemical properties and broad application prospects. It is a spring-like spiral carbon nanotube formed by periodically inserting pairs of five-membered rings and seven-membered rings into the six-membered ring network of straight carbon nanotubes. Its unique helical structure determines that it has unique properties in optics, electricity, magnetism, microwave absorption, mechanics and chemistry, and has great theoret...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02C09K11/65B82Y30/00
Inventor 纪来奎曹雪丽文剑锋唐涛
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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